High-spin states and band structures in the doubly odd 136La nucleus

Zhu, S. J.; Xiao, Shaozhu; L., X.; Li, M. L.; Chen, Y. J.; Zhu, Lei; Li, G. S.; Wen, Sheng; Wu, Xiaofeng

doi:10.1140/epja/i2004-10136-3

Cited by 16 publications

(18 citation statements)

References 14 publications

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“…In this paper, based on our previous works [14][15][16] we investigated the transformation of active site as well as the effect of Ce content on the catalytic performance of La 1−x Ce x SrNiO 4 . The high activity of La 1−x Ce x SrNiO 4 (x ≤ 0.3) for NO decomposition suggests that a new highly active site, which facilitates oxygen mobilization and desorption, is formed due to the Ce addition.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce on NO direct decomposition in the absence/presence of O2 over La1−xCexSrNiO4 (0≤x≤0.3)

Zhu

Xiao

et al. 2005

Journal of Molecular Catalysis A: Chemical

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Section: Introductionmentioning

confidence: 99%

Effect of Ce on NO direct decomposition in the absence/presence of O2 over La1−xCexSrNiO4 (0≤x≤0.3)

Zhu

Xiao

et al. 2005

Journal of Molecular Catalysis A: Chemical

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“…Thus, at the high-spin states, the different quasiparticle configurations in a nucleus will give rise to different nuclear shapes. In previous publications, one of important results is the observation of oblate bands caused by such shape driving effects, for instance, in 131,136,137 La [2,12,13], 132 Ba [14], 137,138 Ce [15,16], 137,138 Pr [17,18], 139 Nd [19], and 140,141 Pm [20,21].…”

Section: Introductionmentioning

confidence: 95%

High-spin structures in the139Pr nucleus

et al. 2012

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Background: 139 Pr is located in a transitional region of neutron number close to the N = 82 shell. The study of its high-spin states and collective bands is important for systematically understanding the nuclear structural characteristics in this region. Purpose: To investigate the high-spin levels and to search for oblate bands in 139 Pr. Methods: The high-spin states of 139 Pr have been studied via the reaction 124 Sn( 19 F,4n) at a beam energy of 80 MeV. The experiment was carried out at the HI-13 Tandem Accelerator at the China Institute of Atomic Energy (CIAE). The data analysis was done by using the γ -γ coincidence method. Results: The level scheme of 139 Pr has been expanded with spin up to 45/2h. A total of 39 new levels and 45 new transitions are identified. Four collective band structures at high-spin states have been newly established. From systematic analysis, one of the bands is proposed as a double decoupled band; two bands are proposed as oblate bands with γ ∼ −60 • ; another band is suggested as an oblate-triaxial band with γ ∼ −90 • . The other characteristics for these bands are discussed. Conclusions:A new level scheme in 139 Pr has been established and the collective bands at high spin have been identified. The result shows that the strong oblate shape-driving effect is caused by neutrons at the high-spin states in 139 Pr.

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“…These three bands show similar features to the other known oblate bands in the A ∼ 130 region: (a) much stronger I = 1 transitions relative to the I = 2 transitions inside the band, (b) no signature splitting occurring, and (c) different moments of inertia (J (1) ) from those of prolate bands. Plots of the moments of inertia (J (1) ) of the collective bands (1), (2), and (3) in 139 Nd along with the oblate bands in 137 Ce [5], 138 Ce [24], 135 La [25], and 136 La [26], and the prolate bands based on the 7 − level in 132 Ba [3] and the 7 − level in 134 Ce [28] against the rotational frequencyhω are shown in Fig. 7.…”

Section: /2mentioning

confidence: 99%

High-spin states and collective oblate bands inNd139

Xu¹,

Zhu²,

L.³

et al. 2008

Phys. Rev. C

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High spin states in 139 Nd nucleus have been reinvestigated with the reaction 128 Te ( 16 O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2h. At low spin, the yrast collective structure built on the νh −1 11/2 multiplet shows a triaxial shape with γ ≈ 32 • according to calculations of the triaxial rotor-plus-particle model. The configurations for some high spin states have been discussed from a systematic comparison with neighboring nuclei. Three collective oblate bands with γ ∼ −60 • at high spin were identified for the first time. A band crossing is observed aroundhω ∼ 0.4 MeV in one oblate band based on the 25/2 − level. The characteristics for these oblate bands have been discussed.

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High-spin states and band structures in the doubly odd 136La nucleus

Cited by 16 publications

References 14 publications

Effect of Ce on NO direct decomposition in the absence/presence of O2 over La1−xCexSrNiO4 (0≤x≤0.3)

Effect of Ce on NO direct decomposition in the absence/presence of O2 over La1−xCexSrNiO4 (0≤x≤0.3)

High-spin structures in the139Pr nucleus

High-spin states and collective oblate bands inNd139

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